Emile Clapeyron was the first to develop this law.  One form of this law contains variables that describe the amount of attraction between molecules and the volume that they t
Emile Clapeyron was the first to develop this law.  One form of this law contains variables that describe the amount of attraction between molecules and the volume that they take up.  Its constant can be divided by Avogadro's number to obtain Boltzmann's constant.  The van der Waals equation is a generalization of it, while it is a combination of Avogadro's law, Charles' law, and Boyle's law.  For 10 points, identify this ubiquitous law that can be used to find the pressure, volume, temperature, and/or the amount of a certain phase of matter.
Emile Clapeyron was the first to develop this law.  One form of this law contains variables that describe the amount of attraction between molecules and the volume that they take up.  
ideal gas law